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Vulnerability record · public intelligence
CVE-2026-4478
HIGH

Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification

Published Mar 20, 2026 · Updated Oct 23, 2026

Severity · CVSSHIGH · 8.1
Known exploitationNot listed
EPSS / likelihood0.31%
QFinch risk score10 / 100

Original summary

Normalized public record · Updated Oct 23, 2026

Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification

Publisher and source text is retained separately from QFinch interpretation.

QFinch assessment

A vulnerability was identified in Yi Technology YI Home Camera 2 2.1.1_20171024151200. This impacts an unknown function of the file home/web/ipc of the component HTTP Firmware Update Handler. The manipulation leads to improper verification of cryptographic signature. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is said to be difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.

Evidence: public source records

Affected products

Affected scope reported by the available public evidence
Affected package, product or rangeFix status
Consult the referenced vendor advisory for affected versions.Consult source advisory

Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.

Remediation

Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.

  1. Confirm the affected product and reachable code path exist in your environment.
  2. Apply the vendor-supported patch or mitigation from the primary advisory.
  3. Rescan the exact deployed revision and retain verification evidence.
Review primary references

Evidence coverage

CVENVDEPSS
SSVC priority
MEDIUM
Confidence
10%
Aliases
None reported

Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.

Sources and record history

  1. VDB-351768 | Yi Technology YI Home Camera HTTP Firmware Update ipc signature verification ↗
  2. VDB-351768 | CTI Indicators (IOB, IOC, IOA) ↗
  3. Submit #773162 | yitechnology YI Home Camera 2 2.1.1_20171024151200 HTTP Firmware OTA Without Cryptographic Signature ↗

Record history

Published Mar 20, 2026 · Last refreshed Oct 23, 2026